<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #c1{color: green}
        .d{color: blue}
        h1,h2{background-color: yellow}
        input {
          color: pink;
        }
        input[type='submit']{
          background-color: red
        }
        *{
            border: 1px solid blue;
        }
    </style>
</head>
<body>
    <ul>
        <li class="d">刘德华</li>
        <li id="c1">张学友</li>
        <li>郭富城</li>
    </ul>
    <h1 class="d">悟空</h1>
    <h1>八戒</h1>
    <h1>沙僧</h1>
    <h2>刘备</h2>
    <input type="submit" value="提交按钮">
    <input type="button" value="普通按钮">
</body>
</html>